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view doc/postgresql.txt @ 6610:db3f0ba75b4a
Change checkpoint_data and restore_connection_on_error to subtransaction
checkpoint_data and restore_connection_on_error used to commit() and
rollback() the db connection. This causes additional I/O and load.
Changed them to use 'SAVEPOINT name' and 'ROLLBACK TO name' to get a
faster method for handling errors within a tranaction.
One thing to note is that postgresql (unlike SQL std) doesn't
overwrite an older savepoint with he same name. It keeps all
savepoints but only rolls back to the newest one with a given name.
This could be a resource issue. I left a commented out release
statement in case somebody runs into an issue due to too many
savepoints. I expect it to slow down the import but....
| author | John Rouillard <rouilj@ieee.org> |
|---|---|
| date | Sat, 29 Jan 2022 11:29:36 -0500 |
| parents | ba82fb74f806 |
| children | a0a100453eb9 |
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.. index:: postgres; deployment notes ========================== PostgreSQL/psycopg Backend ========================== This are notes about PostqreSQL backend based on the psycopg adapter for Roundup issue tracker. Prerequisites ============= To use PostgreSQL as backend for storing roundup data, you should additionally install: 1. PostgreSQL 8.x or higher - https://www.postgresql.org/ 2. The psycopg python interface to PostgreSQL: https://www.psycopg.org/ Running the PostgreSQL unit tests ================================= The user that you're running the tests as will need to be able to access the postgresql database on the local machine and create and drop databases. See the config values in 'test/db_test_base.py' about which database connection, name and user will be used. Credit ====== The postgresql backend was originally submitted by Federico Di Gregorio <fog@initd.org>